# Rational.LessThanOrEqual Operator (UInt64, Rational)

**Solver Foundation 3.0**

[This documentation is for preview only, and is subject to change in later releases. Blank topics are included as placeholders.]

Returns a value that indicates whether an unsigned long integer is less than or equal to a rational number.

This API is not CLS-compliant.

**Namespace:**Microsoft.SolverFoundation.Common

**Assembly:**Microsoft.Solver.Foundation (in Microsoft.Solver.Foundation.dll)

#### Parameters

- n
- Type: System.UInt64

An unsigned long integer value.

- rat
- Type: Microsoft.SolverFoundation.Common.Rational

A rational value.

#### Return Value

Type: System.Booleantrue if the n parameter is less than or equal to the rat parameter; otherwise, false.

- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

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